Patents by Inventor Xiaofeng Wang

Xiaofeng Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190379075
    Abstract: A method of operating a fuel cell stack is described. The fuel cell stack includes a cathode, an anode, a sump configured for collecting water from the anode, and a temporarily disabled drain valve that is otherwise configured to transition from a first position to a second position and thereby modulate water drained from the sump. The method includes increasing a first pressure in the anode via a controller. The method also includes, concurrent to increasing, decreasing a second pressure in the cathode via the controller and, concurrent to decreasing, maintaining a relative humidity of less than a threshold relative humidity in the cathode via the controller.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Xiaofeng Wang, Chad Dubois, Sergio E. Garcia
  • Publication number: 20190379074
    Abstract: A method of operating a fuel cell stack is described. The fuel cell stack includes a cathode, an anode, and a temporarily disabled bleed valve that is otherwise configured to transition from a first position to a second position and thereby modulate nitrogen drained from the anode. The method includes increasing a first pressure in the anode via a controller and, concurrent to increasing, decreasing a second pressure in the cathode via the controller. A system and a device including the fuel cell stack are also described.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Chad Dubois, Xiaofeng Wang, Sergio E. Garcia
  • Publication number: 20190365894
    Abstract: The present invention discloses an antibody specifically binding to a human endothelin receptor and uses thereof, where the antibody can inhibit the functions of the human endothelin receptor. The present invention includes the preparation, cloning, expression, and characterization of the antibody. The present invention can be used to effectively treat pulmonary arterial hypertension, a disease associated with pulmonary arterial hypertension, and a reproductive organ cancer in a human.
    Type: Application
    Filed: August 12, 2019
    Publication date: December 5, 2019
    Inventors: Cheng Zhang, Hua Zhang, Xiaofeng Wang, Chenjiang Yao, Yan Jiang, Min Wang, Xinxin Shi, Hao Pan, Shuqian Jing
  • Publication number: 20190347985
    Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.
    Type: Application
    Filed: February 11, 2019
    Publication date: November 14, 2019
    Inventors: Derek K. Shaeffer, Mahdi Farrokh Baroughi, Xiaofeng Wang, Sam S. Li, John T. Wetherell, Henry C. Jen, Xiang Lu, Hasan Akyol, Hopil Bae, Xiang Fang, Hjalmar Edzer Ayco Huitema, Tore Nauta
  • Publication number: 20190332246
    Abstract: A system for dynamically rendering a graphical user interface is disclosed. The system is configured to receive a login information associated with a user. The system then identifies a persona associated with the user based on the received login information. The identified persona is associated with a set of action commands and each action command includes a condition and a content item identifier. The system proceeds to identify the action commands associated with the identified persona, evaluate the conditions associated with the identified set of action commands, and determine the conditions that are satisfied based on the evaluating. Next, the system identifies the content item identifiers associated with the satisfied conditions and retrieves the content items associated with the identified content item identifiers. Then, the system renders the retrieved content items in a graphical user interface.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 31, 2019
    Inventors: Chandan K. Pankaj, Vijaykumar Goyal, Yacine Arbani, Xiaofeng Wang, Santosh Mali, Patrick Kevin Kane
  • Patent number: 10460642
    Abstract: Systems, methods, and devices are provided to reduce noise present in sensing circuits used for calibrating light emitting diodes (e.g., organic light emitting diodes) in electronic display devices. Such a system may include a display that renders image data using self-emissive pixels. Values on the pixels may be sensed using a current source that outputs a current and a comparator that receives the current. The comparator changes states when a voltage signal output by the capacitor crosses a first threshold voltage or a second threshold voltage. A controller receives a first time when the comparator component changes states based on the voltage signal, receives a second time when the comparator component changes states based on the voltage signal, determines a current value based on the first time and the second time, and calibrates a pixel based on the current value.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 29, 2019
    Assignee: Apple Inc.
    Inventors: Hung Sheng Lin, Jiayi Jin, Wei H. Yao, Hyunwoo Nho, Guangmao Xing, Weijun Yao, Xiaofeng Wang, Yafei Bi, Haifeng Li
  • Patent number: 10416958
    Abstract: In one embodiment, a method includes receiving data points, determining first-level cluster centroids using the data points, and assigning each data point to at least one first-level cluster centroid. The method also includes determining second-level cluster centroids using data points assigned to a particular first-level cluster centroid and assigning each of the data points previously assigned to the particular first-level cluster centroid to at least one second-level cluster centroid. The method further includes determining clusters based on the first-level cluster centroids and the second-level cluster centroids, and assigning each data point to at least one cluster.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 17, 2019
    Assignee: Bank of America Corporation
    Inventors: Mandeep Singh, Xiaofeng Wang
  • Publication number: 20190279552
    Abstract: A display device may include a plurality of pixels that may display image data on a display. The display device may also include a circuit that may receive pixel data including a gray level for at least one pixel of the plurality of pixels. The circuit may then receive an emission clock signal using a clock circuit based on the pixel data, such that the emission clock signal may cause the at least one pixel to receive a current for an amount of time based on the gray level. The circuit may then gate off the clock circuit after the amount of time.
    Type: Application
    Filed: September 20, 2017
    Publication date: September 12, 2019
    Inventors: Derek K. Shaeffer, Hopil Bae, Yafei Bi, Wei H. Yao, Xiaofeng Wang
  • Patent number: 10412396
    Abstract: Methods and devices for encoding and decoding video are described that partition transform blocks into coefficient groups. The coefficients within non-zero coefficients are run-length coded in a reverse scan order within the group. Prior to coefficient coding, data is encoded indicating which coefficient group in group scan order is the last to contain a non-zero coefficient. Then data is encoded indicating the position within that last non-zero coefficient group of the last non-zero coefficient in scan order inside the coefficient group. Thus the decoder is able to decode run-length data knowing the positions of the coefficients and eliminating the need for end-of-block flags.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: September 10, 2019
    Assignee: BlackBerry Limited
    Inventors: Dake He, Tianying Ji, Jing Wang, Xiaofeng Wang
  • Patent number: 10376581
    Abstract: The present invention discloses an antibody specifically binding to a human endothelin receptor and uses thereof, where the antibody can inhibit the functions of the human endothelin receptor. The present invention includes the preparation, cloning, expression, and characterization of the antibody. The present invention can be used to effectively treat pulmonary arterial hypertension, a disease associated with pulmonary arterial hypertension, and a reproductive organ cancer in a human.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: August 13, 2019
    Assignee: Gmax Biopharm LLC.
    Inventors: Cheng Zhang, Hua Zhang, Xiaofeng Wang, Chenjiang Yao, Yan Jiang, Min Wang, Xinxin Shi, Hao Pan, Shuqian Jing
  • Patent number: 10375048
    Abstract: A user identity verification method is disclosed. The method includes receiving an identity verification request sent by a user through a client terminal; determining a user communication number according to the identity verification request and generating a corresponding temporary communication number for the user communication number; recording the user communication number and the temporary communication number as first data; returning the temporary communication number to the client terminal; receiving a call request initiated by the user to the temporary communication number; determining a respective user communication number and a respective temporary communication number corresponding to the call request as second data; verifying whether the first data matches with the second data; and returning a verification result to the client terminal. The method can improve security and reliability of identity verification, reduce a user's waiting time, and enhance user experience.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: August 6, 2019
    Assignee: Alibaba Group Holding Limited
    Inventors: Xiaofeng Wang, Hui Dong, Yang Yu, Daocheng Xie, Weiqin Wan, Lizhong Li
  • Publication number: 20190239220
    Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.
    Type: Application
    Filed: March 29, 2019
    Publication date: August 1, 2019
    Inventors: Seyed Ali Akbar FAKOORIAN, Alberto RICO ALVARINO, Peter GAAL, Wanshi CHEN, Yongbin WEI, Juan MONTOJO, Renqiu WANG, Hao XU, Xiaofeng WANG
  • Publication number: 20190239176
    Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation and other clean-slate, OFDM based systems such as enhanced component carrier (eCC) systems. An example method is provided for operations which may be performed by a BS to generate and transmit a dual-layer PSS, and correspondingly, techniques for a UE to detect the dual-layer PSS. The PSS may be generated utilizing a binary code cover and at least one sequence applied to a number of symbols within one or more subframes of a frame.
    Type: Application
    Filed: March 20, 2019
    Publication date: August 1, 2019
    Inventors: Jing LEI, Hao XU, Peter GAAL, Xiaofeng WANG, Wanshi CHEN, Yongbin WEI, Juan MONTOJO, Alberto RICO ALVARINO
  • Patent number: 10360826
    Abstract: An electronic device includes one or more unit pixels with a first node, a second node, and a third node. The device includes light-emitting-diode (LED) voltage (Vled) sensing circuitry, that senses Vled of the one or more unit pixels, by: sampling a charge of a capacitor of the one or more unit pixels, transitioning from the sampling, and reading out the Vled based upon a change in the charge of the capacitor, such that an operation of the unit pixel may be modified based upon the Vled.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: July 23, 2019
    Assignee: Apple Inc.
    Inventors: Yafei Bi, Xiaofeng Wang, Haifeng Li, Mohammad B. Vahid Far, Hopil Bae, Hung Shen Lin, Hyunwoo Nho, Wei H. Yao
  • Patent number: 10360827
    Abstract: An electronic device includes one or more unit pixels and threshold voltage (Vth) sensing circuitry. The threshold voltage sensing circuitry senses Vth of the one or more unit pixels, by: sampling a charge of a capacitor of the one or more unit pixels, transitioning from the sampling, and reading out the threshold voltage based upon a change in the charge of the capacitor, such that an operation of the one or more unit pixels may be modified based upon the threshold voltage.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: July 23, 2019
    Assignee: Apple Inc.
    Inventors: Yafei Bi, Xiaofeng Wang, Haifeng Li, Mohammad B. Vahid Far, Hopil Bae, Hung Shen Lin, Hyunwoo Nho, Wei H. Yao
  • Publication number: 20190215148
    Abstract: A method of establishing an anti-attack public key cryptogram includes (1) two parties select a braid group Bn with n?7, and Bn=?1, ?2, . . . , ?n?1| ?i?j=?j?i, |i?j|?2, ?i?i+1?i=?i+1?i?i+1, 1?i?n?2, (2) the two parties select two subgroups A and B in Bn generated from a1, a2, . . . , ak and b1, b2, . . . , bm respectively, (3) the first party selects an element x=x (a1, a2, . . . , ak)?A as a first private key, and sends x?1b1x, x?1b2x, . . . , x?1bmx to the second party, (4) the second party selects an element y=y (b1, b2, . . . , bm)?B as a second private key, and sends y?1a1y, y?1a2y, . . . , y?1aky to the first party, (5) the first party obtains KA=x?1x(y?1a1y, y?1a2y, . . . , y?1aky)=x?1y?1xy, (6) the second party obtains y?1y(x?1b1x, x?1b2x, . . . , x?1bkx)=y?1x?1yx, and calculates to obtain KB=(y?1x?1yx)?1=x?1y?1xy, thereby reaching a shared secret key K=KA=KB.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 11, 2019
    Inventors: Weijian Wang, Xiaofeng Wang, Li Xu, Liyuan Wang
  • Patent number: 10319278
    Abstract: Systems and methods are provided for generating a nonlinear clock signal. Such a signal may be used to drive sub-pixels of an electronic display. The electronic display may include a microdriver that drives at least one sub-pixel based at least in part on an image data signal and an emission clock signal. The image data signal specifies a gray level for driving the sub-pixel and the emission clock signal includes a series of pulses of monotonically increasing pulse widths to enable the microdriver to drive the sub-pixel to emit light for a particular amount of time associated with the gray level. An emission timing controller may generate the emission clock signal.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: June 11, 2019
    Assignee: Apple Inc.
    Inventors: Hyunwoo Nho, Mohammad B. Vahid Far, Xiaofeng Wang
  • Patent number: 10291912
    Abstract: Methods and devices for encoding and decoding video using mode-dependent context determination in the case of level-run pair coding of transform coefficients are described. Intra-coding modes may be grouped into classes and each class may be associated with a partitioning of a coefficient group into regions. The region in which a coefficient falls determines, in part, the context selected for encoding bins associated with that coefficient, including a level, if the coefficient is non-zero, and a run if the coefficient correspond to the bin of a binarized run value.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: May 14, 2019
    Assignee: BlackBerry Limited
    Inventors: Dake He, Tianying Ji, Jing Wang, Xiaofeng Wang
  • Publication number: 20190134196
    Abstract: Provided herein are a stable solution formulation of an ETAR antibody, and use thereof in treating, preventing, or alleviating one or more symptoms of pulmonary arterial hypertension or one or more symptoms of cancer of a reproductive organ.
    Type: Application
    Filed: May 27, 2017
    Publication date: May 9, 2019
    Inventors: Cheng Zhang, Kesuo Fan, Yong Guo, Chenjiang Yao, Hua Zhang, Xiaofeng Wang, Shuqian Jing
  • Patent number: 10285144
    Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation and other clean-slate, OFDM based systems such as enhanced component carrier (eCC) systems. An example method is provided for operations which may be performed by a BS to generate and transmit a dual-layer PSS, and correspondingly, techniques for a UE to detect the dual-layer PSS. The PSS may be generated utilizing a binary code cover and at least one sequence applied to a number of symbols within one or more subframes of a frame.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: May 7, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Lei, Hao Xu, Peter Gaal, Xiaofeng Wang, Wanshi Chen, Yongbin Wei, Juan Montojo, Alberto Rico Alvarino